Just heard something that was interesting. Seems like there's some evidence to suggest that when the water temp reaches the upper limit for a particular species they won't tolerate too much stimulation - bright colors, fast strips, or flash on the flies. Makes sense based on my experience here. Water temps are warm all year round and I've long since done away with flash on my skinny water/tailing fish flies.

I suppose this is were flies that ride hook point down (or have something to hide the hook - like Borski's Slider) are important. On a bright, clear day in 10 inches of water, a bonefish can see everything on that fly. My hook-point-down patterns consistently outfish the standard hook-up flies.